Latesha’s mother puts $85 in Latesha’s lunch account at school. Each day Latesha uses $3 from her account for lunch. The table b
elow represents this situation. Latesha’s Lunch Account Day Amount Left in Account ($) 0 $85 1 2 3 4 5 How much is left in Latesha’s lunch account after she has had lunch for 5 days? A.$15
B.$67
C.$70
D.82
The answer is C. (70). The easiest way to explain this is to use a table. You could you other methods like by using a proportion but this way is easier.
4+x=(4/3) x 4 — you multiply both sides by 4 to get rid of the fraction on the left. 4+x=16/3 — then simplify the fraction on the right x = 1 1/3 — minus 4 from both sides to get x alone